Loose-leaf binder.



IATENTED MAY 15, 1906.

G. LABARRE. LOOSE LEAP BINDER.

APPLICATION FILED D20. 20, 1905.

George Maj ST GEORGE LABARRE, OF NEWV ORLEANS, LOUISIANA.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed December 26,1905. Serial No. 293,361.

\ tion.

This invention relates to loose-leaf binders, and especially that classof binders employing parallel pin-carrying members movable toward andaway from each other, the loose leaves being perforated to receive theimpaling-pins and being held between said members.

The object of the present invention is to provide a simple and novelmeans for actuating and holding the pin-carrying members so that theirparallelism is preserved under each and every adjustment of the same,the actuating mechanism being controlled by means of a key oroperating-crank which is detachable from the binder, so that said bindercannot be operated for releasing the leaves Without the aid of such keyor operating-crank.

With the above and other objects in view the invention consists in thenovel construction, combination, and arrangement of parts, ashereinafter fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a plan view of a loose-leafbinder embodying said invention. Fig. 2 is a crosssection through thesame on the line 2 2 of Fig. 1.

Like reference-numerals designate corresponding parts in both figures ofthe drawings.

Referring to the drawings, 1 1 designates parallel pin-carrying membersbetween which the loose leaves are adapted to be confined and impaled onholding-pins which are fitted in the sockets 2 on each of the membersand project toward each other, the pins being preferably of telescopicconstruction similar to those now in common use.

The members 1 are slidably connected with a base or frame plate 3,extending the entire length of the binder and provided at each end withoppositely-located guide-plates 4 and 5, which are secured to the plate8 in such n1anner as to leave an intervening space or guideway 6, intowhich the angular end flanges 7 of the members 1 fit and slide in adirection transversely of the plate 3, said-construction serving tosteady and guide the movements of the members 1.

The mechanism for actuating the members 1 toward and away from eachother consists of an operating-screw 8, which is mounted in an elongatedhousing 9, fastened to the plate 3. The screw 8 is provided with aterminal threaded portion 10, which works in a threaded opening in a nut11, forming one end of the housing 9, as shown in Fig. 1. The screw 8 isprovided with another threaded portion 12 adjacent to the thread 10, butof greater pitch, the threads 12 having approximately twice the pitch ofthe threads 10 for a purpose which will hereinafter appear. The screw 8comprises two sections or members, one of which is adapted to telescopewithin. the other, or, in other words, the section which is threaded isprovided with a squared end portion 13, which has a sliding iit in theother section 1.4, which. is in the form of a sleeve journaled in theplate 4 and the end 15 of the housing 9, any suitable means beingprovided to prevent endwise movement of the sleeve 14:. The sleeve 14also extends through the outer plate 5 and is operated by means of a keyor crank 16, having a squared shank 17, which fits into the outer end ofthe sleeve 14, the operating-crank or key being thus removed from thedevice.

In connection with the screw 8 two runners 18 and 19 areemployed, therunner 18 being threaded upon the part 12 of the screwshaft and havingpivotally connected thereto links 20, which extend obliquely outward toand connect pivotally with the pin'carrying members 1. The other runner19 is swivcled or journaled on the screw 8 and has a shoulderedengagement therewith, so that while the screwS is permitted to rotatefreely therein said runner 19 is moved with the screwshaft 8 in theendwise movement of the latter. Links 21 extend. from the runner 19outward to the members 1, said links corresponding with the links 20,above referred to, but being inclined in a direction reverse thereto.

When the shaft 8 is turned by means of the operating-crank or key, saidshaft-is caused to move endwise within the housing 9 and relatively tothe base or frame-plate 3, thus moving the runner 19 at a rate of speedcorre sponding with the pitch of the threads 10. Simultaneonsly therunner 18 is moved at a speed corresponding with the pitch of thethreads 1.2, or, in other words, at a speed approximately twice that ofthe runner 19 and in an opposite direction. It will thus be seen ICOthat the runners 18 and 19 are moved simultaneously toward or away fromeach other at equal speed relatively to the base or frame plate 3, andtherefore, by means of the links 20 and 21, the members 1 1 are movedout ward or inward and maintained in parallel relation at all times.This causes a separation between or a bringing together of the innerends of the impaling-pins and provides for releasing and fastening theloose leaves in the usual manner. The telescopic construction of theoperating-screw admits of the necessary endwise movement of the threadedportion or section of said shaft. Both threaded portions 10 and 12 ofthe screw are pitched in the same direction, and they may be either bothright-handed or left-handed threads.

Having thus described the invention, what I claim is- 1. A loose-leafbinder comprising oppositely-located leaf-holding members, and means formoving said members in opposite directions consisting of runners havinga linked connection with said members, and an operating-screw havingthreaded portions of different pitch and associated with the runners toimpart equal and simultaneous movement thereto in opposite directions.

2. A loose-leaf binder comprising oppositely-located leaf-holdingmembers, a base or frame plate with which said members have a sliding enagement, runners movable along said base late in a direction at rightangles to the movement of said members, links interposed between saidrunners and members,

and an operating-screw having a swiveled engagement with one runner, athreaded engagement with the other runner and a threaded engagement withthe base or frame plate.

3. A loose-leaf binder comprising oppositely-located leaf-holdingmembers, a base or frame plate with which said members have a slidingengagement, runners movable ina direction at right angles to themovement of said members, links connecting the runners, with saidmembers, and a telescopic operating-screw embodying an endwise-movablesection having a threaded connection with the frame-plate and alsoconnected with the runners to impart simultaneous and equal movementthereto in opposite directions.

4. A loose-leaf binder comprising oppositely-located leaf-holdingmembers, a frameplate with which said members have a sliding engagement,runners having a linked connection with said members, a telescopicoperating-screw extending parallel with said members and adapted toactuate the runners simultaneously in opposite directions, said screwembodying an endwise-movable member and an endwise-fixed member intowhich.

the movable member slides and with which it has a keyed connection, anda detachable key for rotating the endwise-fiXed member.

In testimony whereof I affix my signature in presence of two Witnesses.

GEORGE LABARRE.

Witnesses:

DELVAILLE H. THEARD, R. J. Noenns.

